Yes, all HEP and LRC train cars feature at-seat power outlets in both Business class and Economy class, if you wish to charge your phone. HEP equipment can be found in the Québec City-Windsor corridor, the Canadian (Toronto-Vancouver), and the Ocean (Montréal-Halifax on certain departures).
There are at-seat power outlets in Economy class on the Renaissance train cars. However, there are no power outlets in the lounge cars.
There are also power outlets in your private cabin on board other VIA Rail trains.